BetterGrades Precalculus · Unit 1 · Assessment

Unit 1 Investigation

A multistage representation and verification task.

investigation

5 concrete stages

A multistage representation and verification task.

Investigation rubric

  1. represent the situation
  2. perform valid mathematical work
  3. interpret the result
  4. verify with a second representation
Assessment

Complete every required response

Item 101

Explain why this conclusion is valid: Mark equation solving ready and route only the rational-expression strand to repair. Use the foundation problem as evidence: A learner solves every linear equation but cancels terms illegally in rational expressions.

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Item 202

Connect two representations for this example: Solve sqrt(x+1)=x1sqrt(x+1)=x-1. Describe what a graph, table, mapping, or algebraic form would have to show.

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Item 303

Explain why this conclusion is valid: The result is x+3x+2,\frac{x+3}{x+2}, with x2,2x\ne 2,-2. Use the foundation problem as evidence: Simplify x2+x6x24\frac{x^2+x-6}{x^2-4}.

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Item 404

Connect two representations for this example: Solve sqrt(x+6)=xsqrt(x+6)=x. Describe what a graph, table, mapping, or algebraic form would have to show.

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Item 505

Solve the representation example, then name the feature of function notation and graph reading repair that it illustrates: State range with minimum 2-2 and no upper bound.

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